c - Printing a string due to a new line -

is there efficient (- in terms of performance) way printing arbitrary string, until first new line character in (excluding new line character) ?

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example:

char *string = "hello\nworld\n";  printf(foo(string + 6)); 

output:

world

if concerned performance might (untested code):

void myprint(const char *str) {   int len = strlen(str) + 1;   char *temp = alloca(len);    int i;   (i = 0; < len; i++)   {     char ch = str[i];     if (ch == '\n')       break;     temp[i] = ch;   }    temp[i] = 0;    puts(temp); } 

strlen fast, alloca fast, copying string first \n fast, puts faster printf is far slower 3 operations mentioned before together.